Dexamethasone for Traumatic Swelling of the Larynx

Introduction to Dexamethasone Therapy

The American Society of Anesthesiologists recommends intravenous dexamethasone for managing traumatic laryngeal swelling, with repeated doses before and after extubation to decrease the incidence of stridor and need for reintubation 1, 2

For ongoing management, repeated doses of intravenous dexamethasone before and after tracheal extubation have proven useful in decreasing stridor and reintubation risk 1, 2

Begin corticosteroid therapy at least 12-24 hours before planned extubation in high-risk patients 3, 4

A negative leak test indicates increased risk of laryngeal edema and should prompt consideration for dexamethasone therapy 1
Patients with traumatic laryngeal swelling should be monitored closely for signs of airway compromise, including stridor, difficulty breathing, arterial oxygen desaturation, and tachypnea 5
Position patients with airway compromise upright and administer high-flow humidified oxygen 6
Consider epinephrine nebulization for post-extubation stridor caused by laryngeal edema, which has a quick onset but transient effect 1

The beneficial effect of dexamethasone has been clearly demonstrated in neonates at risk for laryngeal edema but is less definitively proven in older children 1, 2
If extubation is at risk due to laryngeal anomaly, an assessment by an ENT surgeon is recommended 1

Assess risk factors for laryngeal edema: traumatic intubation, prolonged intubation, repeated intubations, or direct laryngeal trauma 1, 7
Continue with repeated doses every 6 hours through and after extubation 1
Position patient in 35° head-up position to reduce airway swelling 4
Monitor closely for signs of airway compromise after extubation 5
For post-extubation stridor, consider epinephrine nebulization as adjunctive therapy 1
Have equipment for reintubation readily available, including consideration of airway exchange catheters in high-risk cases 1, 4

Dexamethasone exerts anti-inflammatory properties that reduce pain and swelling in traumatic laryngeal edema, with most studies using doses ranging from 0.15 to 1.0 mg/kg, and maximum doses between 8-25 mg, as recommended by the American Academy of Otolaryngology-Head and Neck Surgery 8, 9

A negative leak test indicates increased risk of laryngeal edema and should prompt consideration for dexamethasone therapy, as suggested by the Anaesthesia journal 10

Consider epinephrine nebulization for post-extubation stridor caused by laryngeal edema, which has a quick onset but transient effect, and have equipment for reintubation readily available, including consideration of airway exchange catheters in high-risk cases, as recommended by the Anaesthesia journal 10
If extubation is at risk due to laryngeal anomaly or trauma, an assessment by an ENT surgeon is recommended, according to the Anaesthesia journal 10

For patients with neurologic conditions requiring dexamethasone, higher doses may be used, as suggested by the Journal of the National Comprehensive Cancer Network 11
Patients with endocrine disorders already receiving exogenous steroids or in whom steroid administration may interfere with normal glucose-insulin regulation may require special consideration, as noted by the American Academy of Otolaryngology-Head and Neck Surgery 8, 9